Michael Harris appeared three
times on The Rifleman ― The Sister
as the man who was talking to Earl Battle in the beginning
of the episode
―The Challenge as the cowhand in the saloon
―
The Anvil Chorus as Ed Bundy,
he was the cowboy whose wife just had a baby boy.

He has appeared in
Will & Grace
— What's Happening now
— The Highwayman
— Katts and Dog and The Highlander.